Churn-dasher



NITED STATES PATENT OFFICE.

JOSEPH B. SIEWERS, OF DEOA'IUR, ILLINOIS.

CHURN-DASHvER.

SPECIFICATION forming' part of Letters Patent No. 489,336, dated January3, 1893.

Application filed June 30, 1892.

To all whom it may concern:

Be it known that I. JOSEPH B. S1EwERs,a citizen of the United States,and a resident of Decatur, in the county of Macon and State of Illinois,have invented certain new and usef ulIm provenients in Rotary Mixing andBeating Devices; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to letters of referencemarked thereon,which form a part of this specification.

Figure l of the drawings is a side View of the mixer and Fig. 2 isabottom plan view of same.

This invention has relation to certain new and useful improvements inchurn dashers and mixers or beaters, the object being to provide adevice of this character so constructed as to be peculiarly eective uponthe article subjected to its action for the purpose of separation,beating or mixing; and the invent-ion consists in the novel constructionand combination of parts,all as hereinafter specified.

In the accompanying drawings, the letter A designates the dasher, havingthe central solid body portion B, in which is a central vertical bearingaperture a, which is loosely engaged by a journal b on the lower end ofthe handle O. This journal may consist of a reduced cylindric portion ofthe handle, or, as shown, may be a pin or screw driven in the lower endof the handle, and passing loosely through the dasher. In order toprevent undue Wear, washers c, c, are provided. Said body portion B isprovided with a peripheral series of radial, spiral, or oblique wings orblades D, having curved upper and lower faces CZ, d, the upper face dhaving a downward curve from left to right, and the lower face an upwardcurve from right to left. At

each extremity of the wings or blades, the upper and lower faces joineach other forming the oblique horizontal sharp or cutting edges f, f.The upper face of any one of Serial No. 438,572. (No model.)

said blades and the lower face of the next succeeding one to the rightform between them a spiral groove or channel F.

The dasher is designed to be vertically reciprocated in the ordinarymanner by the hand, or by suitable mechanicaldevices and its peculiareffect upon the liquid subjected to its action is derived from thedouble reverse rotary motion given said dasher by the resistance of theliquid as the former is reciprocated, as will now be described.

As the dasher descends into contact with the cream or other liquid, theresistance imparted thereto, bythe displacement of the cream or liquid,upon the curved under faces of the blades, will impart a rotary movementin the direction of the arrow l. When however, the dasher is withdrawn,this resistance is brought to bear upon the upper faces of the blades,and a reverse rotary motion is given the dasher, these two reversemovements occurring upon each reciprocation. These rotary movements arefavored by the peculiar conformation of the blades, and the upper andlower horizontal sharp edgesjf, thereof, which reduce the resistanceencountered by such movements to a minimum.

It will be apparent that the combined movements will produce a livelyagitation of the liquid, and this agitation has been found to be of acharacter which greatly hastens the accomplishment of the desiredresult.

Vhile the dasher is especially designed for use in churns, where itsaction greatly accelerates the separation of the butter, it is no lesseffective in beaters and mixers, of various characters.

I-Iaving described this invention, what I claim and desire to secure byLetters Patent is:

The herein described rotary dasher or beater, comprising the handlehaving a journal at one end, a central circular body portion B, having acentral bearing aperture to receive said journal, and the series ofperipheral, similar, radial, spiral, or oblique blades, extending eachfrom the peripheral edge of the lower face of the body obliquely to theperipheral edge of the upper face of said body,

and havingeaoh curved convex upper and pearanoe of a disk when viewedfrom above lower faces, joining each other at each exor beneath,substantially as specified. tremity of the blade to form the obliquehori- In testimony whereof I afx my signature in zontaloutting edges f',the upper face of any presence of two witnesses.

5 one blade and the lower face of the next sue- JOSEPH B. SIEWERS.

ceeding one forming between them a spiral Witnesses:

groove or channel F, both faces of said dasher FRANK. B. KRAMER, havingthe saine form, and presenting the ap- GEORGE A. SMITH.

